Lenovo's tablet line-up has expanded somewhat at IFA 2012, with the manufacturer showing off three new Android tablets and re-revealing the Yoga 13 Windows 8 convertible.

All the new tablets will ship with Android 'Ice Cream Sandwich' 4.0, rather than the new 'Jelly Bean' 4.1.

The top spot in Lenovo's new Android tablet range is arguably taken by the Ideatab S2110A, which comes with an optional detachable keyboard.

The 10-inch tablet weighs 580g (without the keyboard) and is 8.69mm thick. With the keyboard attached, it can apparently provide up to 20 hours of battery life – without the keyboard, that time is roughly halved.

The keyboard also adds an SD card reader and USB ports to the mix.

The S2110A's processor is a dual-core, 1.5GHz affair with 1GB of memory. The rear-facing camera has a five-megapixel resolution and the forward-facing camera 1.3 megapixels.

The tablet is apparently available now in the US, although European availability and pricing is yet to be announced.

Published: August 30, 2012 -- 15:15 GMT (08:15 PDT)

Photo by: David Meyer

Caption by: David Meyer

For those who like the tablet-keyboard combo but want Windows 8 rather than Android, Lenovo also has the Yoga 13. Or at least, it will have it at some point - having shown a prototype all the way back at CES in January, the company provided no new details at IFA.

What we do know is that it is 16.9mm thick and weighs 1.4kg. It can handle 10-finger multitouch on its 13.3-inch screen, and can be configured with Intel processors all the way up to Core i7.